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Ray-leobiology

@sinosauropteryx.bsky.social
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Paleobiologist, birder, and aspiring museum curator. (She/her)

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alice @aliceduke.bsky.social · 24/02/2026
Some guys who belong at the beach but I see either flying past or joining the herring gulls looking for worms in the fields
digital painting of a little egretdigital painting of a cormorant digital painting of a little egret in water
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alice @aliceduke.bsky.social · 24/02/2026
Here are some corvids
digital painting of a jackdawdigital painting study of a Eurasian jayDigital painting of a magpieDigital painting of a magpie
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Royal Society Publishing @royalsocietypublishing.org · 25/02/2026
Pelagornis, the largest known flying bird, once soared over ancient seas. Using biomechanical models, this #RSOS study shows that Pelagornis could not meet the energy demands required for skim-feeding or picking prey from the water while flying: doi.org/10.1098/rsos...
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Professor John R. Hutchinson @johnrhutchinson.bsky.social · 25/02/2026
New #DAWNDINOS paper! We do predictive simulations of vertical height jumping in the Triassic theropod Coelophysis & extant (tinamou) bird Eudromia. Mainly as sensitivity analysis of what parameters are most important. We show how crucial tail mobility is. royalsocietypublishing.org/rsif/article...
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Mary Gemignani @marygemignani.bsky.social · 27/12/2025
My most recent bird image is from last weekend of a Juvenile Bald Eagle in flight with a view from directly underneath the bird. #BirdOfTheDay #mostrecent #BaldEagle #birds
A young Bald Eagle is soaring above near an energy dam in Wisconsin. He's displaying a full wing and tail spread. His coloring is a patchwork of brown and cream coloring.
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Mike Melton @mikemelton.bsky.social · 28/12/2025
For #BirdOfTheDay #Oustretched, an Agami Heron #CostaRica #birds #birdphotography #nature
A colorful bird with deep blue wings, rich chestnut body, and long white head plumes stands on a leafy branch with one wing raised against a soft green background.
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Ecology and Evolution @ecol-evol.bsky.social · 15/12/2025
An observation of teamwork in a seabird: onlinelibrary.wiley.com/doi/10.1002/... #ornithology
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Jocelyn Anderson Photography @jocelynanderson.bsky.social · 15/12/2025
A Dark-eyed Junco about to bite into a Bittersweet berry.
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Skye McDavid @skyemcdavid.com · 05/11/2025
Of course the big paper on Azhdarchoid phylogeny comes out while I'm at a museum on a research visit (looking at Azhdarchoid cervicals, obviously) but now I'm back at the hotel so it's time to write a proper thread! 1/28
four giant azhdarchids: Cryodrakon boreas, Hatzegopteryx thambema, Arambourgiania philadelphiae, and Quetzalcoatlus northropi. Original art by Kyra Zhuravel
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Dr. Earyn McGee @afroherper.bsky.social · 05/11/2025
The #FindThatLizard Scholarship is accepting applications until 12/10. We fund girls, women, and gender non conforming persons pursuing herpetology🦎🐍🐸🐢 I can’t wait to read your application! earynmcgee.com/findthatliza...
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Ville Sinkkonen @villesinkkonen.bsky.social · 22/09/2025
Remingtoncetid protowhales #sciart
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Janet Hill @saskajanet.bsky.social · 16/09/2025
Junior Broad-Winged Hawk is ready for his fall photoshoot. Should I mention the teensy bit of blood on his talons from lunch? Nah #birds 🌿
Hawk with brown back, brown spots on its white chest and yellow talons with just a teensy bit of blood on them. It is perched on a horizontal tree limb with head turned in profile looking down. The background is soft focus yellow leaves.
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Caxela @caxela.bsky.social · 28/08/2025
A Thylacoleo and Her Joey
A Thylacoleo carnifex rests with her young joey in a cave, the joey lying with its head on its mother's arm. Some light shines on the cave floor through an opening somewhere.
Thylacoleo was a carnivorous marsupial (sometimes known as the marsupial lion) that once lived in Australia.
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Mark Walters @mark-walters.bsky.social · 14/09/2025
There’s an interesting series of 5 free online paleobotany lectures via the Oxford University Botanic Garden this autumn. You can book all 5 lectures here (scroll down webpage to ‘Get your tickets now’ button) www.obga.ox.ac.uk/event/dr-san... #paleobotany
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Maija Karala @maijakarala.bsky.social · 13/09/2025
#SciArtSeptember 13 - Bottleneck We almost lost the last wild horses. At the end of the 1950s, there were only 12 Przewalski's horses left. After decades of conservation efforts, there are now a couple thousand horses living in zoos and conservation areas in several countries, from Spain to China.
A wide, panorama-type illustration showing 12 Przewalski's horses in a crescent formation. They are in calm poses, some standing and watching the viewer, others slowly walking towards them.
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Paulo Leite @pauloleiteart.bsky.social · 13/08/2025
Sinosauropteryx, digital sketch done in Procreate. #dinosaur #paleoart #art
Four Sinosauropteryxes digital sketches overlaid on a photo of a sketchbook
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Gabriel Ugueto @serpenillus.bsky.social · 08/08/2025
A look at three species of Pterosaurs from Late Triassic Europe These are illustrations I did for my book (in preparation) about the tetrapods of the Triassic #paleoart #pterosaurs #sciart #art
Illustration of three pterosaurs on the ground in lateral view. Top: Carniadactylus; center: Eudimorphodon; bottom: PeteinosaurusThree illustration of pterosaurs flying and viewed from below. Top: Carniadactylus; center: Eudimorphodon; bottom: Peteinosaurus
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Joanna Kobierska @joannakobierska.bsky.social · 03/08/2025
Cave lion turnaround
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Dr. Jaimi Gray @jaimiagray.bsky.social · 27/07/2025
Say hello to Florida's newest established species, Typhlonectes natans - the Rio Cauca Caecilian! You can read about their relative abundance, distribution, & natural history, in our brand new paper: journals.ku.edu/reptilesanda... Here is one individual I CT scanned that had 7 babies inside!
A 3d rendering of a CT scan of a Rio Cauca caecilian with transparent body and bone colored skeleton, showing 7 baby caecilians inside, each rendered in a different color - counter-clockwise from tail to head - red, orange, yellow, green, light blue, dark blue, purple.
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EVILy Thomas 🦤🏳️‍🌈 @zhejiang0pterus.bsky.social · 24/07/2025
Since its discovery, Longisquama has been suggested to be a pseudosuchian, dinosaur, drepanosaur, or misc. basal archosaur on the way to birds. Today, its close relative Mirasaura was described, demonstrating that the two of them are actually drepanosaurs: www.nature.com/articles/s41...
Life restoration of Mirasaura. It looks like a lizard with a pointy birdlike head and a "sail" of featherlike integumentary structures on its back. It's depicted as green with brown mottling, and orange, dark brown, and white stripes on the tail. Art by Gabriel UguetoPhylogenetic tree of early reptiles. Mirasaura and Longisquama form a clade within Drepanosauromorpha. From Spiekman et al. 2025
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Wilson Ornithological Society @wilsonornithsoc.bsky.social · 18/07/2025
Happy Friday! Somehow we made it through another week. Try to get out and enjoy some birds this weekend, if it's not too hot where you are. 🐦
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Museum of the Rockies @museumoftherockies.bsky.social · 19/07/2025
Happy #FossilFriday! Finding fossil tracks in the field can be a challenge without good lighting. MOR 1082, the fossil tracks of a Cretaceous horseshoe crab, stand out when the light is right.
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Maija Karala @maijakarala.bsky.social · 13/07/2025
Birds are such a strange kind of dinosaur, we would be astonished by them if they weren't around us all the time. Goblin-like puppeteers behind a screen of feathers, as described by Gary W. Kaiser in his book The Inner Bird.
Digital illustration of a red and blue macaw parrot flying from right to left. Overlaid is drawing of what the parrot looks like without feathers: a chubby pink creature with small limbs and a very large head.
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EVILy Thomas 🦤🏳️‍🌈 @zhejiang0pterus.bsky.social · 11/07/2025
The syrinx itself can fossilize, and has done so in Vegavis and Presbyornis, but we haven't found any outside of Neornithes. However, ossification of the syrinx is highly variable in palaeognaths, and it doesn't look like any have a completely ossified syrinx. This implies...
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Amy Diehl, Ph.D. @amydiehl.bsky.social · 07/07/2025
In a study of professors, women got 378 new work requests over 4 weeks vs 118 for men. Women spent more time on service, advising & teaching; men on research. Orgs should track who is taking extra duties & ensure they are rewarded and distributed fairly. www.forbes.com/sites/kimels...
forbes.com
Being Too Helpful At Work Can Hurt Your Career—Here’s How To Say No
Women are more likely to take on behind-the-scenes duties at work—extra tasks like onboarding or event planning—and it's hurting their careers. Here's how to say no.
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Natee (they/them) @himmapaan.bsky.social · 02/07/2025
'Still' Brown pencils on ivory cartridge paper, 150 × 105 mm. Belated #Junicorn
Sepia-toned, monochrome drawing of a unicorn in side view, standing in a field of tall grasses, facing right. The unicorn has a rich dappled coat and a gentle expression. Beyond it, a tree is framed in a roundel. The foreground grasses are drawn in negative, with the dark areas around and between them forming their shapes. The whole piece is small and intricate.
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Gabriel Ugueto @serpenillus.bsky.social · 02/07/2025
Everyone, please meet Sphenodraco! A newly described sphenodontian (a tuatara relative) from the Late Jurassic of Europe published TODAY! #paleoart #reptiles #sciart #art
An illustration showing Sphenodraco perched on a tree trunk while a group of Rhamphorhynchus fly in the background
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FossilLad123 @fossillad123.bsky.social · 22/06/2025
Sinosauropteryx prima [ #paleoart | #dinosaurs | #sinosauropteryx | #3Dart | #art ]
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Gabriel Ugueto @serpenillus.bsky.social · 25/06/2025
Two small and semiaquatic (possibly) dromaeosaurs from Late Cretaceous Asia. Natovenator polydontus and Mahakala omnogovae. Both species have been found to be closely related to Halszkaraptor I have added these two to my plate of all Dromaeosaurs #paleoart #dinosaur #sciart
Reconstruction of Natovenator next to the silhouette of a ca. 1.8 m tall human Reconstruction of Mahakala next to the silhouette of a ca. 1.8 m tall human Reconstructions of 23 species of Dromaeosaurs next to the silhouette of a ca. 1.8 m tall human
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Dominik Hammelsbruch @dh-paleoart.bsky.social · 20/06/2025
A scene from the Solnhofen Archipelago during the Late Jurassic featuring Orthocormus having a close encounter with the 4-5m long metriorhynchid Dakosaurus. Some Gyrodus are minding their business on the left side. #paleoart #sciart #FossilFriday
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Janet Hill @saskajanet.bsky.social · 15/06/2025
Up early today so got a chance to see one of my favourite local spots at dawn. Such pretty light and beautiful things to see. Look at Mama shoveler with her crew! Think they’ll grow into those bills? Ruddy, the #BestDuck, was looking **fine** and avocets were elegant as always #birds 🌿
Dawn light on an island in a misty marsh. A mixture of plants ranging from yellow to orange to green.A brown duck with a large bill escorts a group of 9 ducklings, all with large bills.A gorgeous chestnut coloured duck with a stiff vertical tail, white cheek patch and bright blue bill. He is in profile, reflected in the water.An elegant black and white wader with an orangey-brown head, blue legs and a long, upturned black beak is wading ankle-deep against a background of green cattail fronds.
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David López-Idiáquez @davididiaquez.bsky.social · 12/06/2025
Happy to share our last work just published in @animalecology.bsky.social. With @claire-doutrelant.bsky.social and Peter Pearman. besjournals.onlinelibrary.wiley.com/doi/10.1111/... @cnrs.fr @biology.ox.ac.uk
besjournals.onlinelibrary.wiley.com
Global patterns of colouration complexity in the Paridae: Effects of climate and species characteristics across body regions
Variation in colour complexity in the Paridae is linked to climate, climate variability and several biotic factors. The strength of the associations is patch specific. Variables related to resource c...
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Birds of the World | The Cornell Lab @birdsoftheworld.bsky.social · 11/06/2025
A monumental taxonomy unification effort has just been published - thanks to all those who've collaborated for years to make this happen! birdsoftheworld.org/bow/news/avi...
birdsoftheworld.org
Birds of the World - AviList: A Unified Global Checklist of the World’s Birds is Now Available
AviList, a unified global checklist of birds, that provides the most current and authoritative taxonomy of birds around the world was released today by experts in taxonomy, nomenclature, and bioinform...
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Natural History Museum, London @nhm-london.bsky.social · 06/06/2025
Lastly, know what you’re looking for! Free apps such as Skyview Free can help you know what you’re looking at. 🔭 You can also look up when the next meteor shower is forecast! The Perseids meteor shower is due to peak on 12 August, with more than 100 meteors per hour. 👀
A night sky with multiple faint stars. 
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Jack Ashby @jackdashby.bsky.social · 04/06/2025
MUSEUM JOB KLAXON! Very excited about bringing this new post in to the team. If you've got good natural history collections management skills and solid leadership experience, we'd love to hear from you! #MuseumJobs
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Mike Melton @mikemelton.bsky.social · 30/05/2025
Greater Ani #Colombia #birds #nature
A glossy black bird with iridescent blue-green feathers and a pale blue eye perched among branches with green leaves.
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Janet Hill @saskajanet.bsky.social · 25/05/2025
My Birdathon #AlphabetOfBirds continues! This one is for the nerds 🤓 *U* is for uropygial gland. Have you ever seen a bird preening and noticed it touching its back near the base of its tail? It’s squeezing oil from its uropygial gland - also known as a preen gland or oil gland (1/3) #birds
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Jocelyn Anderson Photography @jocelynanderson.bsky.social · 24/05/2025
A female Yellow Warbler on the hunt for insects
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Krista Koeller @kristalerista.bsky.social · 23/05/2025
Aistopods were (as far as we know) the first animals to evolve legllessness and they did so almost immediately after their ancestors took their first steps onto land. They slithered over 100 million years before snakes did!
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Ville Sinkkonen @villesinkkonen.bsky.social · 20/05/2025
Behold the Gar cube, Small piece of Campanian ecosystem featuring aquatic plants Nelumbites, Cobbania and Quereuxia. It's a project I have been tinkering on and off for months now.
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Dr. Davey F. Wright ⛏️🦕🧬 @daveyfwright.bsky.social · 08/04/2025
Sometimes when you stare into the abyss of geologic time, the abyss stares back. The Ordovician trilobite Calyptaulax from the OMNH collections. Like modern insects, trilobites had compound eyes with many lenses. The lenses are made of calcite, which also makes up the exoskeleton. #TrilobiteTuesday
An isolated trilobite head featuring large, compound eyes with numerous dome-shaped lenses
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Ville Sinkkonen @villesinkkonen.bsky.social · 20/05/2025
More carboniferous insects. Its absolutely incredible when actual color patterns are preserved in fossils
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Professor John R. Hutchinson @johnrhutchinson.bsky.social · 19/05/2025
A cool funded PhD studentship in the UK that overseas applicants are also eligible for: www.findaphd.com/phds/project...
findaphd.com
The comparative anatomy of the mammalian larynx at Anglia Ruskin University ARU on FindAPhD.com
PhD Project - The comparative anatomy of the mammalian larynx at Anglia Ruskin University ARU, listed on FindAPhD.com
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Janet Hill @saskajanet.bsky.social · 19/05/2025
My Birdathon #AlphabetOfBirds continues! *R* is for rictal bristles. Some birds like this brown thrasher have conspicuous bristles (modified feathers) along the upper edge of their beak. The function of rictal bristles is not clear. We still have lots to learn about #birds! (1/3)
Close-up and and shoulders view of a handsome brown bird with brown speckled chest, golden eye and long slightly downward curving beak. At the corner of its beak on the upper edge are several distinct bristles pointing down.
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Michael Landis @landismj.bsky.social · 19/05/2025
It's back! The Society of Systematic Biologists is running Year 3 of the Mentorship Program! Find community, support your colleagues, and talk trees. Apply by June 10th, 2025. Program info: www.systbio.org/mentorship-p... Application form: forms.gle/QtD22C9dtfRF... @systbiol.bsky.social
Logo for Society of Systematic Biologists Mentorship Program. Two parallel phylogenies, nothing fancy.
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The Skull Index CIC @theskullindex.bsky.social · 17/05/2025
Atlantic Yellow-nosed Albatross submitted by collaborator Demikiev! #atlanticyellownosedalbatross #birdskulls #vultureculture
Lateral Left view of the skull of an atlantic yellow nosed albatross, showing off the vibrant yellow and black beak. The Skull is against a black background.Superior and Inferior view of the skull of an Atlantic yellow-nosed Albatross, showing off the vibrant yellow and black beak and delicate pterygoid bones. The Skull is on top of a black background
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Alberta Claw @albertonykus.bsky.social · 14/05/2025
Chemical analysis of gut contents preserved in the alvarezsaurian dinosaur Bannykus suggests that it fed on vertebrates: www.the-innovation.org/article/doi/... 🧪 (📷Wang et al.)
Diagram of the skeleton of a small, two-legged dinosaur, with close-up photos of gut contents preserved in its body cavity.
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Ben Miller @extinctmonsters.bsky.social · 14/05/2025
Some of the coolest details we can talk about now: a palate lined with pseudoteeth, and scaly toe pads that suggest a primarily ground-dwelling lifestyle!
Comparison of fleshy toes of modern and fossil birds. Archaeopteryx toe pads are most similar to terrestrial birds, not arboreal or raptorial onesArchaeopteryx skull with palate visible next to scale bar, which shows it’s about 4 cm long
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Ben Miller @extinctmonsters.bsky.social · 14/05/2025
It’s publication day for the Chicago Archaeopteryx! Check out the paper in Nature by Jingmai O’Connor and colleagues for details on this specimen’s uniquely preserved anatomy. www.nature.com/articles/s41...
Archaeopteryx fossil in classic dinosaur death pose. Tracts of feathers are highlighted in various colorsIllustration by Michael Rothman shows black and white toothed bird from behind with wings outstretched
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Mike Melton @mikemelton.bsky.social · 12/05/2025
Not a bad morning here at Paraiso Quetzal Lodge #CostaRica This male Resplendent Quetzal was checking out the area before he delivered breakfast to the nestlings. #birds #nature 🌿
A vibrantly colored bird with a bright green head, red belly, and extremely long, flowing tail feathers perched on a mossy branch, holding a dark fruit in its yellow beak.
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